The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Clouds

The month of July in Weatherby Lake experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 31% throughout the month.

The clearest day of the month is July 20, with clear, mostly clear, or partly cloudy conditions 71% of the time.

For reference, on February 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 51%, while on August 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Weatherby Lake, the chance of a wet day over the course of July is decreasing, starting the month at 37% and ending it at 32%.

For reference, the year's highest daily chance of a wet day is 45% on June 8, and its lowest chance is 9% on January 12.

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during July in Weatherby Lake is decreasing, starting the month at 4.2 inches, when it rarely exceeds 6.8 inches or falls below 1.6 inches, and ending the month at 3.4 inches, when it rarely exceeds 6.1 inches or falls below 0.9 inches.

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

Over the course of July in Weatherby Lake, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 39 minutes, implying an average daily decrease of 1 minute, 19 seconds, and weekly decrease of 9 minutes, 12 seconds.

The shortest day of the month is July 31, with 14 hours, 14 minutes of daylight and the longest day is July 1, with 14 hours, 53 minutes of daylight.

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in Weatherby Lake is 5:56 AM on July 1 and the latest sunrise is 22 minutes later at 6:18 AM on July 31.

The latest sunset is 8:49 PM on July 1 and the earliest sunset is 17 minutes earlier at 8:31 PM on July 31.

Daylight saving time is observed in Weatherby Lake during 2018, but it neither starts nor ends during July, so the entire month is in daylight saving time.

For reference, on June 21, the longest day of the year, the Sun rises at 5:52 AM and sets 14 hours, 56 minutes later, at 8:48 PM, while on December 21, the shortest day of the year, it rises at 7:34 AM and sets 9 hours, 24 minutes later, at 4:59 PM.

The solar day over the course of July. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Weatherby Lake is gradually increasing during July, rising from 61% to 64% over the course of the month.

The highest chance of a muggy day during July is 68% on July 23.

For reference, on July 22, the muggiest day of the year, there are muggy conditions 68% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Weatherby Lake is gradually decreasing during July, decreasing from 8.9 miles per hour to 8.1 miles per hour over the course of the month.

For reference, on April 1, the windiest day of the year, the daily average wind speed is 12.6 miles per hour, while on August 7, the calmest day of the year, the daily average wind speed is 8.0 miles per hour.

The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Weatherby Lake typically lasts for 6.7 months (206 days), from around April 5 to around October 28, rarely starting before March 18 or after April 23, and rarely ending before October 10 or after November 14.

The month of July in Weatherby Lake is reliably fully within the growing season.

Time Spent in Various Temperature Bands and the Growing Season in July

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Weatherby Lake are rapidly increasing during July, increasing by 833°F, from 1,568°F to 2,401°F, over the course of the month.

The average growing degree days accumulated over the course of July, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Weatherby Lake is essentially constant during July, remaining within 0.2 kWh of 6.8 kWh throughout.

The highest average daily incident shortwave solar energy during July is 7.0 kWh on July 9.

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Weatherby Lake are 39.238 deg latitude, -94.696 deg longitude, and 951 ft elevation.

The topography within 2 miles of Weatherby Lake contains only modest variations in elevation, with a maximum elevation change of 295 feet and an average elevation above sea level of 947 feet. Within 10 miles also contains only modest variations in elevation (358 feet). Within 50 miles contains only modest variations in elevation (531 feet).

The area within 2 miles of Weatherby Lake is covered by trees (33%), artificial surfaces (33%), and cropland (31%), within 10 miles by cropland (45%) and artificial surfaces (34%), and within 50 miles by cropland (71%) and trees (15%).

Data Sources

This report illustrates the typical weather in Weatherby Lake year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Weatherby Lake.

The estimated value at Weatherby Lake is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Weatherby Lake and a given station.

Other Data

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.